Method of treating proteids.



MoNE R. ISAACS, OF'PHILADELPHIA, PENNSYLVANIA.

METHOD OF TREATING PFiOTElDS.

Specification of Letters Patent.

Anplicatiou filed April 25, 1906. Serial N01 813,658.

Patented March 5, 1907.

T ((17/- whom i2- 'IIIJt/j concern:

Be it known that I, MONE R. ISAACS, a citizen of the United States, and a resident of the city of Philadelphia, State of Pennsyl- Vania, have invented certain newand useful Im rovements in Methods of Treating Protei s and the Composition of Matter Prog duced Thereby, of which the following is a full, clear, and complete disclosure.

My invention has reference to a method 01 i treating animal and vegetable proteids for the purpose of improving the quality of glue or sizing in. which said proteids may be, employe dfor instance, milk-curdor casein the object being to produce a more or less waterproof glue, as well as to-regulate the setting and drying properties of the same.

. too rapidly,

Then alkalie's-such as boraX, soda, potash, lime, phosphates, andammonia are used as solvents for converting casein into glueor sizing, the quality of the glue or sizing is impaired for many purposes for which it is adapted for use,-' this impairment being due to the fact that when so treated it is not sufficiently adhesive and'is slow in setting.

When lime alone is used as a substance to render casein soluble, it is found that the glue or sizing roduced by that method sets us to the conversion of the casein into av caseinate of lime, which when in solution I have found becomes very thick and more or less insoluble after standing-a few hours.

By my method, I treat the proteid with lime and compounds of hydrofluoric acid, combining the compound of hydrofluoric acid, such as alkaline fluorids, with the proteid, and I have'found in practice th-at the proportion of the fluorid will vary from about two to ten per cent., while the proportion of lime will vary fromfive to twenty per cent., due to the quality of the composition which it is desired to produce an increase in the proportion of the fluorid retarding the setting of the lime. I have also found in practice that sodiumfiuorid isthe most convenient as well asthe most suitable for the above purpose; but my method and the. composition produced thereby is not confined to the use of sodium fluorid, as any other soluble fluorid or compound of hydrofluoric acid may be used-for example potassium fluorid or ammonium fluori A11 additional advantage due to my invention is that any ordinary animal and vegetable proteidsuch as hide, glue, case n, starch,

. resin, gums, &c., which are commonly used for glues or sizings-are enriched and made ,moisture-pro'of by the use of the ingredients above set forth. The glues or sizings thus when dry is also increased.

As an additional advantage I find that by dissolving the above-described mixture in water I can produce an excellent sizing or mordant for making fast colors, alone or in connection with mineral matter, for finishing and coating paper, oil-cloth, fabrics, yarns, wood, and iron, and for making paint and that when dissolved in water in suitable proportions an excellent glue is obtained adapthaving when dry more or less waterproof qualities.

Having thus described my improved casein, lime, and sodium fluorid.

casein, lime, fluorid and water. '7. A composition of matter comprising casein,'lime, sodium fluorid and water.

8. A composition of matter comprising five to twenty parts of lime, and two to twelve parts of sodium fluorid.

In witnesswhereof I have hereunto set my hand this 24th day of April, A. 1906.

' MONE ISAACS.

. Witnesses:

r HAR Y COBB KENNEDY, ALEXANDER PARK.

comprising 6. A composition of matter comprising.

madeare additionally fast with or without I colors, and their quality of being waterproof ed particularly. for joining woodwork, &c.,

metho land the composition of matter produced thereby, what I claim, and desire to- 5. A composition or matter comprising substantially one hundred parts of casein, 

